记录spring 开启transactional无法写入数据库问题

 代码没有任何问题的情况下，只能查找，涉及增删改问题的 *** 作不能写入数据库

log

Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@5710e839]
Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@5710e839]
Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@5710e839]
Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@5710e839]

Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@4615f109]
JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@4018244c [wrapping: com.mysql.jdbc.JDBC4Connection@8fa108c]] will be managed by Spring
==>  Preparing: insert into books (bookName,bookCounts,detail) values (bookName=?, bookCounts=? ,detail=?);
==> Parameters: Linux(String), 6(Integer), �����ŵ�����(String)
<==    Updates: 1
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@4615f109]
Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@4615f109]
Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@4615f109]
Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@4615f109]
��ӳɹ�Books(bookID=3, bookName=Linux, bookCounts=6, detail=�����ŵ�����)

是dao层问题，xml中的SQL语句问题